Injured passengers and basic steps
When your're involved in a road accident in which someone has been hurt or actual damage or injury has been caused to property or an animal, then you must stop and give your name and address (and the name and address of the owner of the vehicle) and the vehicle's registration number, and insurance details to any third parties involved.
You must by law report it to the police within 24 hours, and if you have not stopped or not been able to provide details of name and address, registration number and insurance details to the third parties.
Be sure to make a note of the make, colour and model of any vehicles involved, together with their registration plate. Be sure to note the damage to other vehicles, and take photographs if possible. Make a note of the other drivers' full names and addresses.
Also, make a note of all witness names and addresses. Call the police in all but the most straightforward of cases. Do not make any admissions about claims or liability. Draw a sketch plan of the scene and where the vehicles were (take some proper measurements).
Write down your own version of what happened. Tell your insurers as soon as possible after the accident. If you have suffered injury in any way, get checked out by a doctor. If it was not your fault and you have even a slight injury then you should consider claiming compensation. You do not need to use the insurer's solicitors. They may be convenient for them, but not the best for you. If your vehicle is going to be off the road then you may be entitled to a hire one.
Injured passengers
Passengers who have suffered an injury in a car, van or on a motorbike may have possible claims and you should proceed, no matter who the driver of the actual vehicle was.
It's irrelevant that you know or be related to the driver - it is of no consequence. You may feel embarrassed about bringing a claim, but don't be. If the driver was not at fault, then your claims will be against the other party. Even if your driver was at fault then it will be handled by his or her insurance company, so they will not be paying anything themselves.
The driver owes you a duty of care to ensure that you are reasonably safe and the same principle applies to other vehicle drivers and road users. When this duty is breached and you suffer injury, then you have a claim.
All passengers have rights, just as drivers. Be sure that you note any injury, no matter how slight they seem. They could be worsening later with serious complications.